#0A0F37#0A0F37

#0A0F37 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.5% C 0.077 H 271.6°. Best body text is #FFFFFF at 18.48:1 contrast (WCAG AA passes).

Color values

HEX	#0A0F37
RGB	rgb(10, 15, 55)
HSL	hsl(233, 69%, 13%)
HSV	hsv(233, 82%, 22%)
CMYK	cmyk(81.8%, 72.7%, 0%, 78.4%)
CIE-LAB	lab(6.16, 13.51, -26.54)
CIE-LCH	lch(6.16, 29.78, 296.98°)
OKLab	oklab(19.53% 0.0022 -0.0774)
OKLCH	oklch(19.53% 0.077 271.6)
XYZ	xyz(0.9854, 0.6819, 3.6934)
Luminance	0.0068 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 3.06

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0F37 #37320A

analogous

#0A2537 #0A0F37 #1B0A37

triadic

#0A0F37 #370A0F #0F370A

tetradic

#0A0F37 #370A25 #37320A #0A371B

square

#0A0F37 #370A25 #37320A #0A371B

split-complementary

#0A0F37 #371B0A #25370A

monochromatic

#05071A #05071A #0A0F37 #131D6B #1D2B9F

Accessibility & contrast

On white

18.48

#0A0F37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#0A0F37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0F37

18.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0F37	#FFFFFF	#000000	##FFFFFF
##0A0F37	1.00	18.48	1.14	18.48
#FFFFFF	18.48	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001638

Deuteranopia (green-blind)

#001236

Tritanopia (blue-blind)

#001921

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #0a0f37;
/* rgb */ color: rgb(10, 15, 55);
/* oklch */ color: oklch(19.5% 0.077 271.6);

Tailwind

colors: {
  custom: {
    50: '#504d6e',
    500: '#0a0f37',
    950: '#000000',
  },
}

SCSS

$custom: #0a0f37;
$custom-light: #504d6e;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0f37",
  "rgb": {
    "r": 10,
    "g": 15,
    "b": 55
  },
  "hsl": {
    "h": 233.333,
    "s": 69.231,
    "l": 12.745
  },
  "oklch": {
    "l": 0.19527,
    "c": 0.07743,
    "h": 271.6
  },
  "luminance": 0.00682
}

Semantic roles & 50–950 ramp

primary

#0A0F37

secondary

#746C28

accent

#D83CEC

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020107

muted

#78777A

Preview Lab

Preview with #0A0F37

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →